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  • Question

  • The specific gravity of petrol is about


  • Options
  • A. 0.75
  • B. 0.85
  • C. 0.95
  • D. 1.25

  • Correct Answer
  • 0.75 

    • More questions

    • 1. When filing or machining cast iron makes our hands black, then it shows that __________ is present in cast iron.

    • Options
    • A. cementite
    • B. free graphite
      • Discuss
    • 2. The broaching operation in which either the work or the tool moves across the other, is known as

    • Options
    • A. pull broaching
    • B. push broaching
    • C. surface broaching
    • D. continuous broaching
      • Discuss
    • 3. The velocity of air entering in a rocket is __________ as compared to an aircraft.

    • Options
    • A. zero
    • B. less
    • C. more
    • D. same
      • Discuss
    • 4. Gas turbine as compared to internal combustion engine

    • Options
    • A. can be driven at a very high speed
    • B. produces uniform torque
    • C. has more efficiency
    • D. all of these
      • Discuss
    • 5. Which one of the following sets of constituents is expected in equilibrium cooling of a hyper-eutectoid steel from austenitic state?

    • Options
    • A. Ferrite and pearlite
    • B. Cementite and pearlite
    • C. Ferrite and bainite
    • D. Cementite and martensite
      • Discuss
    • 6. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 7. In a petrol engine, the high voltage for spark plug is in the order of

    • Options
    • A. 1000 volts
    • B. 2000 volts
    • C. 11 kilovolts
    • D. 22 kilovolts
      • Discuss
    • 8. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

    • Options
    • A. diffuser inlet radius
    • B. diffuser outlet radius
    • C. impeller inlet radius
    • D. impeller outlet radius
      • Discuss
    • 9. Which of the following material has maximum ductility?

    • Options
    • A. Mild steel
    • B. Copper
    • C. Nickel
    • D. Aluminium
      • Discuss
    • 10. For maximum power, the velocity of the belt will be

    • Options
    • A.
    • B.
    • C.
    • D. none of these
      • Discuss

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